How many valence electrons are in a phosphorous ION? Would it have a full shell?

A. 5

B. 8

Find the temperature (°C) of 1.25 moles of a gas if the gas has a volume 20.0 liters at a pressure of 1.75 atm.

4 what is the net amount of heat released when two moles of c2h6 (g) are formed from its elements at 101.3 kpa and 298 k?

Explain why a mechanical wave does not exist in a vacuum.

Explain the process for determining the molar mass of Carbon Dioxide (CO2)

The pressure exerted on a sample of gas is 735 mm Hg with a volume of 375 mL and a temperature of 25 degrees Celsius. What would the pressure of the gas be if the temperature was reduced to standard temperature and the volume was expanded to 500.

An atom of element A has 108 protons. What would the elements atomic number be?

What is a scientific variable

What kind of reactions are redox reactions a. reactions involving substituting different isotopes b. reactions involving losing and gaining electrons c. reactions involving protons transferring between atoms d.

Determine the number of atoms in 1.75 ml of mercury. (the density of mercury is 13.5 g/ml.)

In the reaction A + B + C >> D, what are the products? A. C and D B. A and B C. A, B, C, and D D. A and C